Auto jack



l'nvw afior, Frederick ELWaZdePm;

F. E. WALDEN A TO JACK Original Filed Aug. 5, 1920 Apr? 17, 1923;

.llll

Patented Apr. 17, T1923.

l UNITE STATES FREDERICK LEZABl E. XVALDEN, OF WORCESTER, MASSACHUSETTS; GRACE E. WALDEN EXECUTRIX OF SAID FREDERICK E. WALDEN, DECEASED.

AUTO JACK.

Application filed August 3, 1920, Serial No. 401,012. Renewed september 15, 1922; Serial No. 588,481.

have invented'certain new and useful 1111-. provements in Auto Jacks, of which the following is a full, clear, and exact specification.

This invention is in the line of devices for lifting automobiles and the like, and it has for its purpose the construction of a lifting jack which shall have a considerable range of heights in order to adapt it to axles of practically all types of make; which shall be capable of receiving operating foot-pres sures at various degrees of lifting; and which shall embody the improvements in details of construction herein after set forth.

In the-drawings forming part of this specification, Fig. 1 is a side view of an auto-jack embodying my improvements. Fig. 2 is a horizontal section on the line 22 in Fig. 1.

The standard 1 is preferably composed of channel iron, as shown in Fig. 2, and is provided with a base 2. Slidable in this standard is a smaller channel bar 3 held therein by a plate 4 fastened between the edges 5 of the standard 1. Antifriction rolls 6 supported by the standard and pressed against the bar 3 render the lift of the latter considerably easier.

Attached to the upper end of the bar 3 is a stepped axle-engaging member 7, its three steps providing that number of different lifting heights. Projecting from this member are spaced lips 9 for pivotally receiving between them the upper end of the connecting rod 10 which composes a part of the lifting mechanism, the lower end being pivoted between the spaced arms 11 of the lever 12. The pivot pin 13 upon which this lever is fulcrumed passes through the arms 11 and alsothrough the plate 4 and the lips or edges 5 of the standard 1. in order to give free space for the play of the bar 3.

By raising the lever 12 to its limit, the stepped member 7 is depressed to its lowest point to enable some one of the steps or shoulders 14 to be introduced beneath the axle to be lifted. It often occurs, however, that some one of the shoulders 14: is a little too high to be received beneath the axle,

and the next lower one is too low to enable the axle to be raised to the desired extent.v

I therefore make the connecting rod 10 longitudinally adjustable by means of a right and left handed screw 15 turned by a knurled shoulder 16 in the internally threaded sections 17. Hence, in case a shoulder 14 is slightly too high, the screw 15 is rotated to lower thestep to the desired point.

For retaining the axle at its elevated point, a notched detent 19 is pivotally supported by the standard 1 at 20 and is adapted to engage by its weighta pin 21 project ing from. the lever 12, the detent being pro vided with several notches 22 to enable the lever to be held at any one of a plurality of angles.

I find that when the lever 12 is raised to its highest position for the proper engagement of the member 7 with an auto-axle, the extremity of the lever is in a most awkward position for the application thereto of the chaufi'eurs foot. Moreover, in many makes of car the body so overhangs the axles as to further interfere with the pressing of the foot upon the lever. To obviate this difficulty and provide a lever which will conveniently receive the operators foot and permit an eflicient downward pressure thereon at the very beginning of the lifting function, I pivot upon the pin 21 between the lever arms 11 an auxiliary lever 23, provided with a pawl 24 adapted to engage the lip 25 of the juncture of the arms 11, as shown in Fig. 2, this pawl being formed with several notches 26 to enable the auxiliary lever to be disposed at several different angles relative to the main lever 12.

Hence, the lever 12 being raised to its limit, the auxiliary lever 23 is adjusted to its lowermost angle by the engagement of the farthermost notch 26 with the lip 25, thereby presenting the auxiliary lever for the convenient application thereto of the operators foot. The foot having pressed down upon this auxiliary lever until the first notch 22 of the detent 19 engages the pin 21, the operator can then change his foot to the main lever 12 and continue its depression and the elevation of the autoaxle. When the auxiliary lever meets the ground, its pawl releases itself from the lip 25 and offers no resistance to the full depression of the main lever, which, being reached, .the detent 19 again engages thepin 21 and holds it and the axle "as long as Wanted.

What I claim is:

1. An auto-jack comprising two-telescopically disposed members, one having a base and the other a stepped aXle-engaging-de.

an axle-engaging device slidably supported by said standard, a leveinpivotally supported by said standard and connected with said device for its elevation by 'tl'ie'depressionof the lever, and an auxiliary lever pivotedto the said; lever and adapted to beheld-at a plurality of different acute angles relative thereto whereby, when the main lever is raised to its maximunrheight t0,lo Wer theaxle-e iigagingdevice, said auxilia'ry lever is sufiiciently lower thanthe mainlever to be easily engaged bythe foot ofthe'operator, and When the auxiliary lever has been forced to the ground, then the main lever can be reached and-further depressed.

3. Annauto-jackcomprising ,a; standard, an axle-engaging device "sli'dably supported by said standard, a main lever pivoted at an intermediate point. to said standard, connection betweenthe short arm of said leyer and said device for the latters elevation by the depression of the long arm of said main lever, an auxiliary lever pivoted to the main lever, a .paWl for retaining said levers at a plurality of difi'erent relative angles, and a detent-for retaining said main leverat a plurality of different: angles relative to said standard.

4:. An auto-j ack comprising a ehannelbar, awbase attached to the lower end thereoflra slenderer channel bar telescopically.slidable Within thefirst-nalned bar, a plate-attached to the open side of the first-named barofor retaining "the second-named bar withindt, anti-frietion rolls supported by the fi-IStnamed bar and bearing against the ,inner bar, a lever having spaced arms pivoted to opposite sidesofathe outer bar', connection betweenlthe ends of said armsand the upper end ofithe inner bar,. and av detent forQholding said-lever in adepressed position.

i In testimony that I: claim the foregoing invention, 1- have hereunto set my hand this 31st day'of July, 1920. I

FFBEDERICIQE. WALDEN. 

